ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 97

• Manufacturer Part Number: ATMEGA128RFA1-ZU
• Description: IC AVR MCU 2.4GHZ XCEIVER 64QFN
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA128RFA1-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 3.5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.5mA
• Current - Transmitting: 14.5mA
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 4kB EEPROM, 16kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN, Exposed Pad
• Rf Ic Case Style: QFN
• No. Of Pins: 64
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 6
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVR128RFA1-EK1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.8.8.5 AES Interrupt Handling
9.9 Continuous Transmission Test Mode
9.9.1 Overview
8266B-MCU Wireless-03/11
register. Setting bit AES_REQUEST = 1 (AES_CTRL register) as described in section
"Security Operation Modes" on
128 bits of plain text data to be XORed with the previous cipher text data, see
37 on
According to IEEE 802.15.4 the input for the very first CBC operation has to be
prepared by a XOR operation of the plain text with the initialization vector (IV). The
value of the initialization vector is 0. However any other initialization vector can be
applied for non-compliant usage. This operation has to be prepared by the application
software.
Note that the MIC algorithm of the IEEE 802.15.4-2006 standard requires CBC mode
encryption only because it implements a one-way hash function.
The status of the security processing is indicated by register AES_STATUS. After a
AES processing time of 24 µs the register bit AES_DONE changes to 1 (register
AES_STATUS) indicating that the security operation has finished (see
Timing Characteristics" on page
The end of the AES processing can also be indicated by the AES_READY Interrupt.
The bit AES_ER of register AES_STATUS is set if the operation has finished with an
error. Otherwise this bit is zero but AES_DONE is ‘1’.
The AES Interrupt handling is slightly different from all other IRQ’s. If the AES_IM Bit
(AES_CTRL Register) and the global interrupt enable flag is set, the AES core can
generate an AES Ready Interrupt (AES_READY). If the IRQ is issued, the
AES_STATUS register must be read to check the finish status of the last operation. If
AES_DONE is set, the last AES operation finished successfully. If AES_ER is set, an
error occurred during the last operation. The AES_ER flag is cleared automatically
during the read access to the AES_STATUS register. The AES_DONE flag is cleared
during the next read or write access to the AES_STATE (AES data) register.
The two status flags must be cleared before a new Interrupt can be issued.
If AES_IM is not set, the processing status can be polled by software (AES_STATUS
register), but no Interrupt occurs.
The 2.4GHz transceiver offers a Continuous Transmission Test Mode to support final
application / production tests as well as certification tests. In this test mode the radio
transceiver transmits continuously a previously transferred frame (PRBS mode) or a
continuous wave signal (CW mode).
In CW mode two different signal frequencies per channel can be transmitted:
• f
• f
Here f
Note that in CW mode it is not possible to transmit a RF signal directly on the channel
center frequency. PSDU data in the Frame Buffer must contain at least a valid PHR
(see section
recommended to use a frame of maximum length (127 bytes) and arbitrary PSDU data
1
2
= f
= f
CH
page 96.
CH
CH
is the channel center frequency programmed by register PHY_CC_CCA.
+ 0.5 MHz
- 0.5 MHz
"Introduction – IEEE 802.15.4-2006 Frame Format" on page
page 95 starts the first encryption. This causes the next
511).
ATmega128RFA1
"Digital Interface
Figure 9-
62). It is
97